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本文介绍一种获得低温的制冷技术——Ｇ－Ｍ循环制冷机的工作原理及其热力学循环过程，以及循环过程中的温度特性，并介绍了Ｇ－Ｍ循环制冷机的应用
This paper introduces a working principle and thermodynamic cycle of G-M circulating cryocooler, which obtains low-temperature refrigeration technology, as well as the temperature characteristics of the cycle, and introduces the application of G-M cycle cryocooler